Description

In this PR, I’ve applied minimal fixes to remove deprecation warnings from the Sass build, specifically:

• Replaced the deprecated darken() and lighten() functions with the new safe-adjust-lightness() wrapper
• Fixed deprecated number / number division by replacing it with calc()

fixes #314

Notes

There are still some deprecation warning around using @import. I started exploring replacing all @import with @use, but doing that properly would require:

• Updating all SCSS files to match new Sass module rules
• Refactoring how variables and mixins are shared between files
• Dropping Grunt’s sasslint since it’s incompatible with the new Sass syntax
• Potentially replacing the Grunt-based build system with a more modern setup (like npm scripts) for easier long-term maintenance.

Let me know if you need help with this.